Horses Stretch?

I just got back from letting the horses out and saw something funny I want to share. In the year plus we’ve owned a horse, I have never seen a horse do what Moonshine just did. As she walked out into the pasture, she crossed her two front legs and leaned far back for a few seconds. She stretched! I didn’t realize horses did that. Sorry if this is a boring revelation to those of you who have been around horses for a long time but it’s a first for me. Sorry, no picture.